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Equations of state, mixing rules and phase equilibrium calculations. Part 1. Equations of state derived from the van der Waals theory. Pure components

This paper reviews the equations of state (EOS) that are widely used in thermodynamic applications to hydrocarbon processing problems. The most widely used cubic equations (van der Waals, Redlich-Kwong, Soave, Peng-Robinson) are emphasized in this presentation, in which important thermodynamic functions are derived from the equations of state. The purpose of this text is to provide an introductory treatment of EOS from a chemical-engineering viewpoint. We have sought to present material so that it may be readily understood, while at the same time maintaining the standard of rigor, demanded by sound thermodynamic analysis.

cubic equations of state; van der Waals type equations of state; vapor-liquid equilibrium; pure components

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